Is there a switched power source in the M2?

MPBK · 10-28-2018, 05:56 PM

In my 135i, the USB port is switched - it turns off with the engine
In the M2, it appears that both USB ports are permanently on. Both cigarette lighters are also permanently on, but that's not surprising, as that's how it is in most cars.
Where do you guys plug in your dashcam?

doughboy · 10-29-2018, 04:53 PM

Some supplies are delayed off, maybe 20 minutes after ignition off / lock.

Plug something it with an led on it then lock up and come back and look through the windos after say half an hour.

MPBK · 10-29-2018, 06:29 PM

I've already tested what I could find.
My question is if you know which supply is switched.
I'm also asking those who may have a dash cam what they do.

ZPrime · 10-29-2018, 10:37 PM

The cigarette lighter and USB are switched, but there is a delay.
Locking the car makes them shut off more quickly.

I have my radar detector tapped off of the mirror, which shuts off within a minute or two of ignition off.

My dash cam is on a PowerMagicPro which is run directly from the battery in the trunk (so I can use parking mode).

MPBK · 10-30-2018, 07:47 AM

Quote:

Originally Posted by ZPrime

The cigarette lighter and USB are switched, but there is a delay.
Locking the car makes them shut off more quickly.

I have my radar detector tapped off of the mirror, which shuts off within a minute or two of ignition off.

My dash cam is on a PowerMagicPro which is run directly from the battery in the trunk (so I can use parking mode).

Mirror? How?

monochrom3 · 10-30-2018, 09:53 AM

Quote:

Originally Posted by MPBK

Quote:

Originally Posted by ZPrime

The cigarette lighter and USB are switched, but there is a delay.
Locking the car makes them shut off more quickly.

I have my radar detector tapped off of the mirror, which shuts off within a minute or two of ignition off.

My dash cam is on a PowerMagicPro which is run directly from the battery in the trunk (so I can use parking mode).

Mirror? How?

Used one of these:

https://www.amazon.com/Escort-Direct...adar+hard+wire

Splice power to the green/brown wire for the mirror and ground to the brown/black.

larry.beck · 10-30-2018, 10:35 AM

I use Mirrortap to power my radar detector from the mirror power source. Works like a charm and by selecting the right tap point it powers on and off immediately. I'm also using a Blendmount to hand the detector right below the mirror without using suction cups.

dtmurf · 11-01-2018, 05:45 AM

I have my dash cam connected to a Battery Pack which is connected to a Power Magic Pro which is connected to the car battery by way of the fuse board. I can get about 12 hours of parking mode. The only issue so far is that I have to push the open button on the key when I return to the car in the morning, just having the key in my pocket and grabbing the door handle or pushing the trunk release button will not work.

I think it is fuse 124 but I'd have to check.

MPBK · 11-01-2018, 09:41 AM

Quote:

Originally Posted by dtmurf

I have my dash cam connected to a Battery Pack which is connected to a Power Magic Pro which is connected to the car battery by way of the fuse board. I can get about 12 hours of parking mode. The only issue so far is that I have to push the open button on the key when I return to the car in the morning, just having the key in my pocket and grabbing the door handle or pushing the trunk release button will not work.

I think it is fuse 124 but I'd have to check.

That sounds like a good solution.
Have you figured out why connecting a load to the battery (the Power Magic Pro) would interfere with Comfort Access (door handle sensing)?

dtmurf · 11-02-2018, 04:33 AM

I can't say I've looked into it but I have the Power Magic Pro set to cut off supply from the car battery (going to the Power Magic Battery Pack) when the car battery reaches 12 Volts. My assumption is that the car goes into battery save mode and shuts off the Comfort Access...I don't know what to call it...field which reaches out to the key. Pushing the button always works and the car has always started with the first push of the start button. I do get a warning on the screen telling me the batter is draining with the car turned off

MPBK · 11-02-2018, 12:43 PM

Your guesses make perfect sense to me.
Can that Power Magic be set to stop at 12.5V? Have you tried playing with that?

10-28-2018, 05:56 PM	#1
MPBK Everyday I'm shuffling 449 Rep 1,098 Posts Drives: '12 SG 135i DCT; '18 MG M2 DCT Join Date: Sep 2011 Location: USA iTrader: (0)	Is there a switched power source in the M2? In my 135i, the USB port is switched - it turns off with the engine In the M2, it appears that both USB ports are permanently on. Both cigarette lighters are also permanently on, but that's not surprising, as that's how it is in most cars. Where do you guys plug in your dashcam?
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10-29-2018, 04:53 PM	#2
doughboy Major General 1545 Rep 8,970 Posts Drives: 2018 M2 Comp 6MT Join Date: Jan 2009 Location: UK iTrader: (2)	Some supplies are delayed off, maybe 20 minutes after ignition off / lock. Plug something it with an led on it then lock up and come back and look through the windos after say half an hour.
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10-29-2018, 06:29 PM	#3
MPBK Everyday I'm shuffling 449 Rep 1,098 Posts Drives: '12 SG 135i DCT; '18 MG M2 DCT Join Date: Sep 2011 Location: USA iTrader: (0)	I've already tested what I could find. My question is if you know which supply is switched. I'm also asking those who may have a dash cam what they do.
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10-29-2018, 10:37 PM	#4
ZPrime I INDIC8 612 Rep 1,286 Posts Drives: 2018 LBB M2, 6MT Join Date: Dec 2016 Location: Cleveland, OH iTrader: (0) Garage List 2018 BMW M2 [9.50]	The cigarette lighter and USB are switched, but there is a delay. Locking the car makes them shut off more quickly. I have my radar detector tapped off of the mirror, which shuts off within a minute or two of ignition off. My dash cam is on a PowerMagicPro which is run directly from the battery in the trunk (so I can use parking mode). __________________ 2004 Matrix XRS 6MT => 2008 VW R32 DSG => 2012 Audi TTRS 6MT => 2018 BMW ///M2 6MT I'm an IT guy by trade and tech nerd by choice. I like HPDEs, parts of US Hwy 129, NC 28, and the Cherohala Skyway. I'm also a fan of aural pleasure.
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10-30-2018, 10:35 AM	#7
larry.beck Second Lieutenant 217 Rep 289 Posts Drives: 2018 M2 Join Date: Aug 2018 Location: Seattle iTrader: (0) Garage List 2018 BMW M2 [0.00]	I use Mirrortap to power my radar detector from the mirror power source. Works like a charm and by selecting the right tap point it powers on and off immediately. I'm also using a Blendmount to hand the detector right below the mirror without using suction cups. __________________ ///M2 - 2018 LBB DCT
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11-01-2018, 05:45 AM	#8
dtmurf Captain 482 Rep 757 Posts Drives: M2 Join Date: Nov 2016 Location: PNW iTrader: (0) Garage List 1996 BMW 318is [4.75] 2012 Audi Q5 [4.50] 2017 BMW M2 [10.00]	I have my dash cam connected to a Battery Pack which is connected to a Power Magic Pro which is connected to the car battery by way of the fuse board. I can get about 12 hours of parking mode. The only issue so far is that I have to push the open button on the key when I return to the car in the morning, just having the key in my pocket and grabbing the door handle or pushing the trunk release button will not work. I think it is fuse 124 but I'd have to check. __________________ '17 M2 DCT Long Beach Blue
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11-02-2018, 04:33 AM	#10
dtmurf Captain 482 Rep 757 Posts Drives: M2 Join Date: Nov 2016 Location: PNW iTrader: (0) Garage List 1996 BMW 318is [4.75] 2012 Audi Q5 [4.50] 2017 BMW M2 [10.00]	I can't say I've looked into it but I have the Power Magic Pro set to cut off supply from the car battery (going to the Power Magic Battery Pack) when the car battery reaches 12 Volts. My assumption is that the car goes into battery save mode and shuts off the Comfort Access...I don't know what to call it...field which reaches out to the key. Pushing the button always works and the car has always started with the first push of the start button. I do get a warning on the screen telling me the batter is draining with the car turned off Attached Images __________________ '17 M2 DCT Long Beach Blue Last edited by dtmurf; 11-02-2018 at 04:53 AM..
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11-02-2018, 12:43 PM	#11
MPBK Everyday I'm shuffling 449 Rep 1,098 Posts Drives: '12 SG 135i DCT; '18 MG M2 DCT Join Date: Sep 2011 Location: USA iTrader: (0)	Your guesses make perfect sense to me. Can that Power Magic be set to stop at 12.5V? Have you tried playing with that?
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